Question : Simplify the following expression.
25 ÷ 5 of 12 × 2 − 9 ÷ 27 of 3 × 5 − 14 ÷ 28 × 4

Option 1: $-\frac{41}{91}$

Option 2: $-\frac{31}{9}$

Option 3: 18

Option 4: $-\frac{31}{18}$

Question : Directions: Select the correct combination of mathematical signs to replace * signs and to balance the following equation.
(9 * 8 * 7) * 13 * 5

Option 1: ×, =, ÷, −

Option 2: ×, −, ÷, =

Option 3: ÷, −, =, ×

Option 4: −, ÷, ×, =

Question : Directions: Which of the following interchanges of signs would make the given equation correct?
5 – 4 ÷ 2 + 7 × 3 = 14

Option 1: ÷ and +

Option 2: × and −

Option 3: − and ÷

Option 4: + and ×

Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
(44 * 3) * 9 * 89 * (174 * 29) * 58

Option 1: ÷, −, =, −, ×, −

Option 2: +, ÷, +, =, −, ×

Option 3: ×, +, =, +, ×, ÷

Option 4: ×, +, =, −, ÷, +

Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
(626 * 2) * (11 * 9) * 69 * 240 * 103

Option 1: ÷, +, ×, =, +, +

Option 2: +, ×, =, ÷, +, −

Option 3: ÷, −, ×, =, −, ×

Option 4: +, ×, =, −, ÷, +